{"schema_version":"1.7.5","id":"CVE-2026-53136","published":"2026-06-25T08:38:25.097Z","modified":"2026-07-22T18:14:43.644726862Z","related":["CGA-55q9-786x-qmg4","SUSE-SU-2026:3130-1","SUSE-SU-2026:3166-1"],"summary":"drm/amd/display: Clamp VBIOS HDMI retimer register count to array size","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Clamp VBIOS HDMI retimer register count to array size\n\n[Why & How]\nThe VBIOS integrated info tables (v1_11 and v2_1) contain HdmiRegNum and\nHdmi6GRegNum fields that are used as loop bounds when copying retimer I2C\nregister settings into fixed-size arrays (dp*_ext_hdmi_reg_settings[9]\nand dp*_ext_hdmi_6g_reg_settings[3]). These u8 fields are not validated\nbefore use, so a malformed VBIOS can specify values up to 255, causing an\nout-of-bounds heap write during driver probe.\n\nClamp each register count to the destination array size using min_t()\nbefore the copy loops, in both get_integrated_info_v11() and\nget_integrated_info_v2_1().\n\n(cherry picked from commit 5a7f0ef90195940c54b0f5bb85b87da55f038c69)","affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"1e8635ea0ea370bf4f0f2b2f1b3eb61474dd962a"},{"fixed":"029571d51140650783be4fb98fe7cb4754752086"},{"fixed":"5f8b39452fb16f507c9e4d8b4a83ce27e893307c"},{"fixed":"4d1c3c26c2ab1842e139e61983395d64bd2e518b"},{"fixed":"d6be8e59af412623e3d874be3a048406c0edfe60"},{"fixed":"3f32d52ec604c659725d865cf8cc6a17a33f9c6a"},{"fixed":"8aaa7e317fbd4beb9c6a9f77aa4cf52fae78b117"},{"fixed":"fb0707ce00eef4e2d60c3020e1c0432739703e4a"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53136.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.15.0"},{"fixed":"5.15.210"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.176"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.143"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.94"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.36"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.13"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53136.json"}}],"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/029571d51140650783be4fb98fe7cb4754752086"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3f32d52ec604c659725d865cf8cc6a17a33f9c6a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4d1c3c26c2ab1842e139e61983395d64bd2e518b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5f8b39452fb16f507c9e4d8b4a83ce27e893307c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8aaa7e317fbd4beb9c6a9f77aa4cf52fae78b117"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d6be8e59af412623e3d874be3a048406c0edfe60"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fb0707ce00eef4e2d60c3020e1c0432739703e4a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53136.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53136"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53136.json"}}